Martial Pink/Erika who is the only girl in Martial Force fights with evil secret organization Ego. One day， a boy (Daisuke) reports information about Ego’s terrorist activity and it prevent terrorism before happens by Martial Force. Erika adopts Daisuke as brother because he was an war orphan by Ego’s terrorism. Daisuke/Martial Junior starts undercover operation to investigate abduction case by Ego without noticing Erika. However， Ego’s jellyfish monster takes Daisuke hostage to lure Erika solely and defeat her. Is Erika able to stop jellyfish monster’s ambition?